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Partners' Capital and Distributions - Common Equity Repurchase Program (Details) - Common Equity Repurchase Program - Common Units - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Nov. 30, 2020
Partners Capital and Distribution [Line Items]
Stock repurchase program, authorized amount				$ 500
Common equity repurchase program, repurchased amount	$ 0	$ 74	$ 178
Common equity repurchase program, remaining amount	$ 198
Maximum
Partners Capital and Distribution [Line Items]
Stock repurchase program, authorized amount				$ 500

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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